Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W56/00—Synchronisation arrangements
  • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W24/00—Supervisory, monitoring or testing arrangements
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W24/00—Supervisory, monitoring or testing arrangements
  • H04W24/04—Arrangements for maintaining operational condition
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W36/00—Hand-off or reselection arrangements
  • H04W36/0005—Control or signalling for completing the hand-off
  • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
  • H04W36/0085—Hand-off measurements
  • H04W36/0088—Scheduling hand-off measurements
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W56/00—Synchronisation arrangements
  • H04W56/001—Synchronization between nodes
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W24/00—Supervisory, monitoring or testing arrangements
  • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W84/00—Network topologies
  • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
  • H04W84/04—Large scale networks; Deep hierarchical networks
  • H04W84/042—Public Land Mobile systems, e.g. cellular systems
  • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

• the present invention relates to the field of communications technologies, and in particular, to a method and network device for determining a GAP length of a measurement gap. Background technique
• the wireless access technology of wireless cellular mobile networks is constantly evolving, with the aim of meeting the needs of users for higher speeds, wider coverage and greater capacity in the future.
• the current technological evolution is being
• the 3G system evolves to 3G Long Term Evolution (LTE) and further to the LTE-Advanced system.
• LTE Long Term Evolution
• the network sends the measurement configuration information to the connected UE through Radio Resource Control (RRC) signaling, and the UE performs measurement according to the content of the measurement configuration information, and then reports the measurement result to the network.
• RRC Radio Resource Control
• the measurement of the UE is called the same frequency measurement, and if it is different, it is called the inter-frequency measurement.
• the UE performs the inter-frequency measurement it may need to adjust the radio frequency to the location of the frequency point, so the data cannot be sent and received at the service frequency.
• a measurement gap (GAP) is required, that is, a time period during which the UE leaves the current frequency point to measure at other frequency points.
• the eNB will configure the inter-frequency measurement gap (GAP), which is determined by two parameters, namely the gap pattern and the gap offset (gapOf f set).
• GAP inter-frequency measurement gap
• the measurement gap repetition period (MGRP) is 40ms and 80ms respectively.
• SFN mod T FLOOR (gapOff set/10);
• the measurement GAP length is uniformly defined as 6ms, for the reason that in order to synchronize with the measured target cell, at least: the frequency conversion time of the receiver (1ms) + (main and secondary synchronization signal + signal measurement time length) (5ms), these It is 6ms.
• the UE After receiving the gap pattern and the gap offset information from the eNB, the UE calculates the subframe position starting point for the inter-frequency measurement according to the above formula, and performs the inter-frequency measurement in the consecutive 6 subframes after the starting subframe.
• the UE does not perform physical downlink control channel (PDCCH) reception at the gap location, and does not send uplink data. Therefore, the network does not schedule UEs during GAP.
• PDCCH physical downlink control channel
• DC Dual connectivity is being discussed, that is, a User Equipment (UE) can be connected to the primary base station (MeNB) and the secondary base station (SeNB) at the same time, and the data is transmitted, thereby improving the throughput rate of the UE.
• UE User Equipment
• MeNB primary base station
• SeNB secondary base station
• the data is transmitted, thereby improving the throughput rate of the UE.
• the embodiments of the present invention provide a method and a network device for determining the length of a measurement gap GAP.
• the method can be used to determine an appropriate measurement GAP length in a dual-connection scenario, thereby effectively avoiding improper selection of the GAP length.
• the scheduling resources are wasted.
• an embodiment of the present invention provides a method for determining a length of a measurement gap GAP, where the method includes:
• the first network device determines that the GAP length is a first length
• the first network device determines that the length of the GAP is a second length; The first length is smaller than the second length.
• the method further includes:
• Whether the first network device determines whether the primary base station and the secondary base station are synchronized includes:
• the method further includes:
• the first network device acquires SFN deviation information used to indicate a system frame number SFN deviation between the primary base station and the secondary base station;
• Whether the first network device determines whether the primary base station and the secondary base station are synchronized includes:
• the SFN deviation is zero;
• the SFN deviation is less than the first threshold.
• the first network device acquires, to obtain, an SFN between the primary base station and the secondary base station
• the SFN deviation information of the deviation includes:
• the first network device acquires the SFN deviation information from the second network device, where the SFN deviation information is obtained according to an initial time of the SFN of the primary base station and an initial time of the SFN of the secondary base station.
• the first network device is the primary base station And the secondary base station or the UE.
• the method further includes:
• the first network device acquires a calculation error of the SFN deviation
• the second length is 7 ms; or, when the calculation error of the SFN deviation is greater than the second threshold, the second length is 8 ms .
• an embodiment of the present invention provides a network device, including: a processing unit and a storage unit;
• the processing unit is configured to:
• determining that the GAP length is the first length is the length of the GAP
• first length is less than the second length
• the storage unit is configured to store the GAP length.
• the network device further includes a communication unit, configured to communicate with other network devices;
• the processing unit is further configured to acquire, by using the communication unit, indication information used to indicate whether the primary base station and the secondary base station are synchronized;
• the processing unit for determining whether the primary base station and the secondary base station are synchronized is specifically configured to determine, according to the indication information, whether the primary base station and the secondary base station are synchronized.
• the processing unit is further configured to acquire SFN deviation information used to indicate a system frame number SFN deviation between the primary base station and the secondary base station;
• the processing unit for determining whether the primary base station and the secondary base station are synchronized are specifically configured to determine, according to the SFN deviation information, whether the SFN deviation satisfies a synchronization condition; wherein, when the SFN deviation satisfies the synchronization condition And the primary base station and the secondary base station are synchronized, and when the SFN deviation does not satisfy the synchronization condition, the primary base station and the secondary base station are not synchronized.
• the synchronization condition includes:
• the SFN deviation is zero; or,
• the SFN deviation is less than the first threshold.
• the processing unit for acquiring the SFN deviation information is specifically configured to acquire the SFN deviation information according to an initial time of the SFN of the primary base station and an initial time of the SFN of the secondary base station; or
• the network device further includes a communication unit configured to communicate with other network devices; the processing unit for acquiring the SFN deviation information is specifically configured to acquire, by the communication unit, the other network device from the network device SFN deviation information, the SFN deviation information is obtained according to an initial time of the SFN of the primary base station and an initial time of the SFN of the secondary base station.
• the network device is the primary base station, The secondary base station or the UE is described.
• the network device further includes: an error acquiring unit, configured to acquire a calculation error of the SFN deviation;
• a second length determining unit configured to: when the calculation error of the SFN deviation is not greater than a second threshold, the second length is 7 ms; or, when a calculation error of the SFN deviation is greater than the second threshold
• the second length is 8 ms.
• FIG. 1 is a schematic diagram of frame boundary synchronization of a MeNB and an SeNB according to the present invention
• FIG. 2 is a schematic diagram of frame boundaries of a MeNB and a SeNB that are not synchronized according to the present invention
• FIG. 3 is a flowchart of a method for determining a measurement gap length according to Embodiment 1 of the present invention
• FIG. 4 is a flowchart of a method for determining a measurement gap length according to Embodiment 2 of the present invention
• a method for determining a measurement gap length is provided.
• FIG. 6 is a signaling diagram of a method for determining a measurement gap length according to Embodiment 4 of the present invention
• FIG. 7 is a method for determining a measurement gap according to Embodiment 5 of the present invention.
• FIG. 8 is a flowchart of a method for determining a measurement gap length according to Embodiment 6 of the present invention
• FIG. 9 is a signaling diagram of a method for determining a measurement gap length according to Embodiment 7 of the present invention
• 10 is a schematic diagram of a network device according to Embodiment 8 of the present invention.
• FIG. 11 is a schematic structural diagram of a network device according to Embodiment 9 of the present invention.
• FIG. 12 is a schematic structural diagram of a UE according to Embodiment 10 of the present invention.
• FIG. 13 is a schematic structural diagram of a network device according to Embodiment 11 of the present invention
• FIG. 14 is a schematic structural diagram of a UE according to Embodiment 12 of the present invention.
• Embodiment 1 is described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
• Embodiment 1 is described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
• Embodiment 1 is described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
• Embodiment 1
• Embodiment 1 of the present invention provides a method for determining the length of a measurement gap GAP, which can be applied to a scenario of dual connectivity.
• a user equipment Us e r Equ i pment, UE
• MeNB primary base station
• SeNB secondary base station
• the synchronization scenario means that the system frame numbers of the two base stations (MeNB and SeNB) are aligned, and the subframe numbers are aligned, as shown in FIG. 1 .
• the original gap mechanism can be reused for the synchronization scenario.
• the MeNB and the SeNB may not have the system frame numbers aligned, and the subframe numbers may not be aligned.
• a total of 6 ms of the subframe 2-7 of the MeNB is the GAP interval of the UE, and the UE performs the inter-frequency point measurement in the 6 ms. Since the MeNB and the SeNB are not synchronized, for the SeNB, the UE actually performs the inter-frequency point measurement in the portions of the subframes 1 and 7.
• the UE Since the UE cannot receive the service frequency information during the GAP, the UE may not receive the information of the subframe 1 and the subframe 7 of the secondary base station, resulting in the subframe even if the UE does not measure at all times of the subframes 1 and 7. It cannot be used for information transfer. Therefore, for a non-synchronized scenario in a dual-connection scenario, if a 6-ms GAP configuration is performed with reference to the timing of the primary base station, the secondary base station is likely to fail to schedule the UE due to the partial measurement of the subframe, and the GAP configuration of 7 ms or 8 ms is unified. Will cause waste of scheduling resources
• FIG. 3 is a flowchart of a method for determining a length of a measurement gap GAP according to Embodiment 1 of the present invention. As shown in FIG. 3, the method includes: Step 610: The first network device determines whether the primary base station and the secondary base station are synchronized.
• the first network device may be specifically a base station, a secondary base station, or a UE in a dual connectivity scenario.
• the specific implementation process of the solution is slightly different.
• the base station side The UE side and the UE side will be described in detail.
• step 320 is performed.
• step 330 is performed.
• Step 320 When the primary base station and the secondary base station are synchronized, the first network device determines that the length of the GAP is a first length.
• Step 330 When the primary base station and the secondary base station are not synchronized, the first network device determines that the length of the GAP is a second length.
• the first length is smaller than the second length.
• the length of the GAP when the first length is synchronized between the primary base station and the secondary base station is 6 ms.
• the length of the GAP when the second base is unsynchronized between the primary base station and the secondary base station is set to 7 ms or 8 ms in the embodiment of the present invention.
• the method further includes:
• the first network device acquires SFN deviation information used to indicate a system frame number SFN deviation between the primary base station and the secondary base station;
• the first network device acquires the SFN deviation information according to an initial time of the SFN of the primary base station and an initial time of the SFN of the secondary base station; or
• the first network device acquires the SFN deviation information from the second network device, where the SFN offset information is obtained according to the SFN of the primary base station and the SFN of the secondary base station.
• the second network device refers to the peer device of the first network device.
• the second network device may include a primary base station and/or a secondary base station; when the first network device is the primary base station, the second network device may include the UE and/or the secondary base station;
• the second network device may include a primary base station and/or a UE.
• the first network device may further determine, according to the calculation error of acquiring the SFN deviation, whether the second length is 7 ms or 8 ms.
• the second length is 7 ms; or, when the calculation error of the SFN deviation is greater than the second threshold, the second length is 8 ms. 5ms ⁇
• the second threshold can be preferably set to 0. 5ms.
• the method further includes:
• the first network device acquires indication information for indicating whether the primary base station and the secondary base station are synchronized, where the indication information may include configuration information acquired by the primary base station or the secondary base station, or the UE calculates the SFN deviation. Information on whether the primary and secondary base stations are synchronized.
• Whether the first network device determines whether the primary base station and the secondary base station are synchronized includes:
• the determining, by the first network device, whether the primary base station and the secondary base station are synchronized comprises: determining, by the first network device, whether the SFN deviation meets a synchronization condition according to the SFN deviation information; wherein, when the SFN deviation satisfies When the synchronization condition is described, the primary base station and the secondary base station are synchronized, and when the SFN deviation does not satisfy the synchronization condition, the primary base station and the secondary base station are not synchronized.
• the method further includes:
• the first network device indicates the GAP length of the second network device.
• the method By applying the method for determining the measurement gap GAP length provided by the embodiment of the present invention, the method fully considers the synchronization and non-synchronization of the primary base station and the secondary base station in the dual connectivity scenario, and can determine an appropriate measurement based on the synchronized or non-synchronized scenario.
• the length of the GAP effectively avoids waste of scheduling resources caused by improper selection of the length of the GAP.
• the method provided by the first embodiment of the present invention is described in detail by using the primary base station/secondary base station and the UE as the main body.
• Embodiment 2 Embodiment 2
• the second embodiment of the present invention provides a method for determining the length of the measurement gap GAP
• FIG. 4 is a flowchart of a method for determining the length of the measurement gap GAP according to an embodiment of the present invention.
• the The execution entity of the method is a base station, and specifically may be a primary base station (MeNB) or a secondary base station (SeNB).
• the method provided by the second embodiment of the present invention may be performed by any one of the MeNB or the SeNB, unless otherwise specified.
• the method specifically includes the following steps:
• Step 41 0 Determine whether the primary base station and the secondary base station are synchronized.
• determining whether the frame boundaries of the primary base station and the secondary base station are synchronized may include at least the following three methods.
• Method one including:
• S1-1 acquiring configuration information of the primary base station and the secondary base station
• the configuration of the primary base station and the secondary base station may be performed by using network management or by performing operation and maintenance on the base station. Therefore, whether the primary base station and the secondary base station are synchronized are preset in the configuration information of the base station.
• 51-2 Determine, according to configuration information of the primary base station and the secondary base station, whether frame boundaries of the primary base station and the secondary base station are synchronized.
• the primary base station and the secondary base station are considered to be synchronized.
• Method two including:
• the SFN can be exchanged between the primary base station and the secondary base station.
• the primary base station can obtain the initial time of the SFN of the secondary base station, and the secondary base station can also obtain the initial time of the SFN of the primary base station.
• S2-2 determining an SFN deviation between the primary base station and the secondary base station according to an initial time of the SFN of the primary base station and an initial time of the SFN of the secondary base station;
• the SFN deviation between the primary base station and the secondary base station can be calculated.
• the information includes an SFN deviation
• the UE may read the primary base station physical broadcast channel (PBCH) to implicitly obtain the SFN of the lower 2 bits, and add part of the SFN (high 8 bits) in the system message to obtain the entire SFN of the primary base station, and the UE may read the auxiliary
• the base station PBCH implicitly obtains the SFN of the lower 2 bits, and adds part of the SFN (high 8 bits) in the system message to obtain the entire SFN of the secondary base station.
• the calculation of the SFN deviation may be performed.
• the SFN deviation between the primary base station and the secondary base station should be zero.
• the SFN deviation can also be a small deviation close to 0, such as 30.26 ⁇ ⁇ , which we call the first threshold.
• the SFN deviation is less than the first threshold, the frame boundaries of the primary base station and the secondary base station are considered to be synchronized, and S3-3 is subsequently executed. If the SFN deviation exceeds the first threshold, the frame boundary of the primary base station and the secondary base station is considered to be out of synchronization, and S3-4 is performed subsequently.
• step 420 if the frame boundaries of the primary base station and the secondary base station are synchronized, the following step 420 is performed, and if not, step 430 is performed.
• the primary base station may send the command information to notify the UE to read the system message of the secondary base station, and obtain the SFN of the secondary base station. If it is a synchronization scenario, the primary base station may send a message to inform the UE not to acquire the SFN of the secondary base station.
• Step 420 When the primary base station and the secondary base station are synchronized, determine that the GAP length is the first length.
• the first length is specifically 6 ms.
• the length of the measured GAP is determined to be 6 ms.
• Step 430 When the frame boundaries of the primary base station and the secondary base station are not synchronized, determine that the GAP length is the second length.
• the second length may be specifically 7 ms or 8 ms.
• the second length may be 7 ms, that is, the length of the measured GAP is determined to be 7 ms; if the calculation error of the SFN deviation is considered, and the calculation error of the SFN deviation is greater than the second threshold, the second length may be 8 ms, that is, the measurement GAP is determined. The length is 8ms.
• the RF transmission and reception with the primary base station under dual connectivity may also be implemented by setting the GAP length to the longest GAP interval length.
• Inter-frequency measurement of the secondary base station In order to ensure inter-frequency measurement of the UE, the UE and the base station can only be used according to the longest GAP interval length, such as 7ms or 8ms. However, this is a waste of scheduling resources for a synchronization scenario that does not require an extended GAP length. Taking the GAP configuration of the 40ms period as an example, if the GAS length of 7ms is used in the synchronization scenario, a scheduling opportunity of 2.5% will be wasted.
• the GAP length of 8ms is used, a 5% scheduling opportunity will be wasted. But if it starts In the case of a non-synchronous scenario, if the GAP configuration is performed with reference to the timing of the primary base station, the secondary base station is likely to fail to schedule due to the UE performing measurement at a partial time of the subframe.
• Step 440 Send a message to the user equipment UE, and indicate the determined length of the GAP in the message.
• the primary base station or the secondary base station that determines the length of the GAP sends a Radio Resource Control Protocol (RRC) message or a Media Access Control (Met ia Acces s Cont ro l, MAC) message to the UE.
• RRC Radio Resource Control Protocol
• Method ia Acces s Cont ro l, MAC Media Access Control
• the method for determining the GAP length of the measurement gap may determine, by the base station, whether the primary base station and the secondary base station are in a synchronization scenario, thereby determining that the UE measures the selected GAP length.
• the method fully considers the synchronization and non-synchronization of the primary base station and the secondary base station in the dual connectivity scenario, and can determine the appropriate measurement GAP length based on the synchronous or non-synchronized scenario, thereby effectively avoiding waste of scheduling resources caused by improper selection of the GAP length.
• the third embodiment of the present invention provides a method for determining the length of the measurement gap GAP
• FIG. 5 is a flowchart of a method for determining the length of the measurement gap GAP provided by the embodiment of the present invention.
• the execution entity of the method is the UE that performs communication between the primary base station and the secondary base station in the foregoing implementation 2.
• the method specifically includes the following steps:
• Step 51 0 The UE receives a system message sent by the primary base station, and acquires a system frame number SFN of the primary base station.
• the SFN may be a partial SFN implicitly obtained by the UE de-PBCH plus a partial SFN obtained from the system message. Specifically, the above S 3-l is not described here.
• Step 520 The UE receives the system message sent by the secondary base station, and acquires the SFN of the secondary base station.
• whether the UE acquires the SFN of the secondary base station may be performed according to an instruction of the primary base station.
• the primary base station knows that the current network configuration is an asynchronous scenario
• the UE receives the command information sent by the primary base station, and acquires the SFN of the secondary base station according to the command information.
• the primary base station knows that the current network configuration is a synchronization scenario, the primary base station does not send instruction information for acquiring the secondary base station SFN to the UE.
• Step 530 Determine, according to the SFN of the primary base station and the SFN of the secondary base station, an SFN deviation between the primary base station and the secondary base station.
• the UE calculates an SFN deviation between the primary base station and the secondary base station.
• Step 540 Send information to the primary base station and/or the secondary base station respectively; the information includes an SFN deviation.
• the UE sends the calculated SFN deviation to the primary base station and/or the secondary base station, respectively, for the primary base station and/or the secondary base station to determine whether the frame boundaries of the primary base station and the secondary base station are synchronized according to the SFN system deviation, and further determine the GAP length. .
• Step 550 The UE receives a message sent by the primary base station or the secondary base station, where the message includes an indication of the length of the GAP.
• the method for determining the length of the measurement gap GAP is to obtain the SFN of the primary base station and the secondary base station by using the UE, and calculate the SFN deviation to send to the primary base station or the secondary base station, so that the base station determines whether the primary base station and the secondary base station are in the synchronization scenario. And determining the UE to measure the selected GAP length.
• the method fully considers the synchronization and non-synchronization of the primary base station and the secondary base station in the dual connectivity scenario, and can determine the appropriate measurement GAP length based on the synchronous or non-synchronized scenario, thereby effectively avoiding waste of scheduling resources caused by improper selection of the GAP length.
• Embodiment 4 Embodiment 4
• FIG. 6 is a signaling diagram of a method for determining a measurement gap length according to an embodiment of the present invention. As shown in FIG. 6, the following steps are specifically included:
• the UE receives a system message sent by the primary base station, and acquires an SFN of the primary base station.
• S602 The UE receives a system message sent by the secondary base station, and acquires an SFN of the secondary base station.
• the UE determines, according to the SFN of the primary base station and the SFN of the secondary base station, an SFN deviation between the primary base station and the secondary base station;
• the UE sends information to the primary base station and/or the secondary base station, respectively, where the information includes an SFN offset.
• the calculation of the SFN offset may also be performed by the secondary base station and sent to the primary base station.
• the primary base station determines whether the frame boundary of the primary base station and the secondary base station is synchronized according to whether the SFN deviation is less than a first threshold, and further determines a GAP length.
• the SFN deviation between the primary base station and the secondary base station should be zero.
• the SFN deviation can also be a small deviation close to 0, such as the aforementioned first threshold: 30. 26 ⁇ ⁇ .
• the SFN deviation is less than the first threshold, determining frame boundary synchronization of the primary base station and the secondary base station; when the SFN deviation is not less than the first threshold, determining that the frame boundaries of the primary base station and the secondary base station are not synchronized.
• the length of the measured GAP is determined to be 6 ms.
• the second length may be 7 ms, that is, the length of the measured GAP is determined to be 7 ms; if the calculation error of the SFN deviation is considered, and the calculation error of the SFN deviation is greater than the second threshold, the second length may be 8 ms, that is, the measurement GAP is determined. The length is 8ms.
• the primary base station sends a message to the user equipment UE, where the determined length of the GAP is indicated.
• the fifth embodiment of the present invention provides a method for determining the length of the measurement gap GAP
• FIG. 7 is a flowchart of a method for determining the length of the measurement gap GAP provided by the embodiment of the present invention.
• the execution entity of the method is a base station, and specifically may be a primary base station (MeNB) or a secondary base station (SeNB).
• the method provided by the embodiment of the present invention may be performed by any one of the MeNB or the SeNB, unless otherwise specified.
• the method specifically includes the following steps:
• Step 71 The system frame number of the interaction primary base station, the initial time of the SFN, and the initial time of the secondary base station system frame number SFN;
• the primary base station and the secondary base station can perform the SFN initial time interaction, and the primary base station can obtain the initial time of the SFN of the secondary base station by using the interaction, and the secondary base station can also obtain the initial time of the SFN of the primary base station.
• Step 720 Determine an SFN deviation between the primary base station and the secondary base station according to an initial time of the SFN of the primary base station and an initial time of the SFN of the secondary base station.
• the SFN deviation between the primary base station and the secondary base station can be calculated.
• Step 730 Send information to the UE, where the information includes the SFN deviation, and the UE determines a GAP length according to the SFN deviation.
• the calculated SFN deviation is sent to the UE, so that the UE can determine whether the network is configured as a synchronization scenario or an asynchronous scenario according to the SFN deviation, that is, whether the frame boundaries of the primary base station and the secondary base station are synchronized. In turn, the UE can determine the GAP length accordingly.
• Step 740 The receiving UE sends a message, where the message includes an indication of the length of the GAP.
• the UE may send an RRC message or a medium access control MAC message to the primary base station or the secondary base station, and indicate the selected GAP length information in the message, thereby notifying the primary base station or the secondary device.
• the method for determining the length of the measurement gap GAP is to be sent to the UE by using the SFN deviation of the primary base station or the secondary base station, so that the UE determines whether the primary base station and the secondary base station are in a synchronization scenario, and further determines the UE measurement center.
• the length of the selected GAP The method fully considers the synchronization and non-synchronization of the primary base station and the secondary base station in the dual connectivity scenario, and can determine the appropriate measurement GAP length based on the synchronous or non-synchronized scenario, thereby effectively avoiding waste of scheduling resources caused by improper selection of the GAP length.
• the sixth embodiment of the present invention provides a method for determining the length of the measurement gap GAP
• FIG. 8 is a flowchart of a method for determining the length of the measurement gap GAP according to an embodiment of the present invention.
• the execution entity of the method is the UE that performs communication between the primary base station and the secondary base station in the foregoing fifth embodiment.
• the method specifically includes the following steps:
• Step 81 0 Acquire an SFN offset between the system frame number SFN of the primary base station and the SFN of the secondary base station;
• the UE receives information sent by the primary base station or the secondary base station, and obtains the SFN deviation from the information.
• Step 820 determining whether the SFN deviation is within a first threshold range
• the SFN deviation between the primary base station and the secondary base station should be zero.
• the frame boundaries of the primary base station and the secondary base station are considered to be synchronized, and subsequently step 8 30 is performed, if the SFN deviation exceeds the In the case of a wide value range, the frame boundaries of the primary base station and the secondary base station are considered to be out of synchronization, and step 840 is performed subsequently.
• the size of the first threshold is currently 30. 26 ⁇ in the industry.
• Step 830 when the SFN deviation is within a first threshold range, determining that the GAP length is a first length; Specifically, the first length is specifically 6 ms.
• the length of the measured GAP is determined to be 6 ms.
• Step 840 when the SFN deviation exceeds the first threshold range, determining that the GAP length is a second length
• the second length may be specifically 7 ms or 8 ms.
• the second length may be 7 ms, that is, the length of the measured GAP is determined to be 7 ms; if the calculation error of the SFN deviation is considered, and the calculation error of the SFN deviation is greater than the second threshold, the second length may be 8 ms, that is, the measurement GAP is determined. The length is 8ms.
• the RF transmission and reception with the primary base station under dual connectivity may also be implemented by setting the GAP length to the longest GAP interval length.
• Inter-frequency measurement of the secondary base station in order to ensure the inter-frequency measurement of the UE, the UE and the base station can only be used according to the longest GAP interval length, such as 7ms or 8ms. However, this can cause waste of scheduling resources for a synchronization scenario that does not require an extended GAP length. Taking the GAP configuration of the 40ms period as an example, if the GAP length of 7ms is used in the synchronization scenario, 2.5% of the scheduling opportunities will be wasted.
• the GAP length of 8ms is used, 5% of the scheduling opportunities will be wasted. However, if the GAP of 6ms is always used, for the case of the non-synchronous scenario, if the GAP configuration is performed with reference to the timing of the primary base station, the secondary base station is likely to fail to schedule due to the UE performing the measurement at some moments of the subframe.
• Step 850 Send a message to the primary base station and the secondary base station respectively, and indicate the determined length of the GAP in the message.
• the UE that determines the length of the GAP sends an RRC message to the primary base station and/or the secondary base station, or
• the MAC message or the like indicates the information of the selected GAP length in the message.
• the method for determining the length of the measurement gap GAP may determine whether the primary base station and the secondary base station are in a synchronization scenario by using the UE, thereby determining that the UE measures the selected GAP length.
• the method fully considers the synchronization and non-synchronization of the primary base station and the secondary base station in the dual-connection scenario, and can determine the appropriate measurement GAP length based on the synchronous or non-synchronized scenario, thereby effectively avoiding waste of scheduling resources caused by improper selection of the GAP length.
• FIG. 9 is a signaling diagram of a method for determining the measurement gap length according to an embodiment of the present invention. As shown in Figure 9, the following steps are specifically included:
• S 902 determining, by the primary base station, an initial time of the SFN of the primary base station and an initial time of the SFN of the secondary base station, determining an SFN deviation between the primary base station and the secondary base station;
• the primary base station sends information to the UE; the information includes the SFN offset.
• the secondary base station may also calculate the SFN offset and send the SFN offset to the UE.
• the UE determines, according to whether the SFN deviation is within a first threshold, whether a frame boundary of the primary base station and the secondary base station is synchronized, and further determines a GAP length.
• the first threshold is preferably 30. 26 ⁇ .
• the length of the measured GAP is determined to be 6 ms.
• the frame boundary of the primary base station and the secondary base station are not synchronized, that is, in a non-synchronous scenario, if the calculation error of the SFN deviation is not considered, or the calculation error of the SFN deviation is not greater than the second threshold, for example, 0.
• the second length can be 7ms, that is, the length of the measured GAP is determined to be 7ms; if the calculation error of the SFN deviation is considered, and the calculation error of the SFN deviation is greater than the second threshold, the second length can be 8ms, that is, the measurement is determined.
• the length of the GAP is 8ms.
• the UE sends a message to the primary base station, where the determined length of the GAP is indicated. and / or
• the UE sends a message to the secondary base station, where the determined length of the GAP is indicated. Or
• the primary base station sends a message to the secondary base station, where the determined length of the GAP is indicated.
• step 905 and the foregoing step 906 may be performed in parallel, or step 906 is performed first and then step 905 is performed.
• the primary base station performs the SFN offset calculation and sends the SFN offset to the UE, so that the UE determines the selected GAP length as an example, but the fifth embodiment and the embodiment of the present invention.
• the specific implementation process of the six methods for determining the length of the measurement gap GAP is not limited thereto.
• the embodiment of the present invention provides a network device, which is used to implement the method for determining the length of the measurement gap GAP provided by the foregoing embodiment.
• the device includes: a processing unit 1010 and a storage unit 1020.
• the processing unit 1010 may be implemented by a processor or a processing board, and the storage unit 1020 may be specifically implemented by a memory.
• the processing unit 1010 is configured to: Determining whether the primary base station and the secondary base station are synchronized;
• the first length is less than the second length; the first length is 6 ms; and the second length is 7 ms or 8 ms.
• the storage unit 102 0 is configured to store the GAP length.
• the network device further includes a communication unit (not shown in the figure, only the second optional solution is shown in FIG. 10), and used with other network devices. Communication is performed; the communication unit can be implemented by a transceiver, a transceiver circuit, or the like.
• the processing unit 1000 is further configured to acquire, by using the communication unit (not shown), indication information used to indicate whether the primary base station and the secondary base station are synchronized;
• the processing unit 100 is specifically configured to determine, according to the indication information, whether the primary base station and the secondary base station are synchronized.
• the processing unit 100 is further configured to acquire SFN deviation information used to indicate a system frame number SFN deviation between the primary base station and the secondary base station;
• the processing unit 100 is specifically configured to determine, according to the SFN deviation information, whether the SFN deviation satisfies a synchronization condition, where the primary base station and the secondary base station are synchronized when the SFN deviation satisfies the synchronization condition. And when the SFN deviation does not satisfy the synchronization condition, the primary base station and the secondary base station are not synchronized.
• the first network device may be specifically the primary base station or the secondary base station or the UE, and the synchronization condition includes:
• the SFN deviation is zero
• the processing unit 1010 is specifically configured to acquire the SFN deviation information according to an initial time of the SFN of the primary base station and an initial time of the SFN of the secondary base station; or, the network device further includes a communication unit 1040, For communicating with other network devices; wherein the communication unit 1040 can be implemented by a transceiver, a transceiver circuit, or the like.
• the processing unit 1010 is specifically configured to acquire the SFN deviation information from the other network device by using the communication unit 1040, where the SFN deviation information is obtained according to an SFN of the primary base station and an SFN of the secondary base station. .
• the network device further includes: an error acquiring unit 1060 and a second length determining unit 1070.
• the error obtaining unit 1060 is configured to acquire a calculation error of the SFN deviation
• the second length determining unit 1070 is configured to: when the calculation error of the SFN deviation is not greater than a second threshold, the second length is 7 ms. Or, when the calculation error of the SFN deviation is greater than the second threshold, the second length is 8 ms.
• the network device further includes: a sending unit 1050.
• the sending unit 1050 is configured to indicate the GAP length of the UE and/or the secondary base station, when the network device is specifically the primary base station;
• the sending unit 1050 is configured to indicate the GAP length of the UE and/or the primary base station;
• the sending unit 1050 is configured to indicate the GAP length of the primary base station and/or the secondary base station.
• the apparatus for determining the length of the measurement gap GAP provided by the embodiment of the present invention, it may be determined whether the primary base station and the secondary base station are in a synchronization scenario, and the primary base station and the secondary base station are synchronized and unsynchronized under the dual connectivity scenario.
• the appropriate measurement GAP length is determined based on the synchronous or non-synchronized scenario, and the waste of scheduling resources caused by improper selection of the GAP length is effectively avoided.
• the embodiment of the present invention provides a network device, which is used to implement the method for determining the measurement gap GAP length provided by the foregoing Embodiment 2.
• the network device includes: a network interface 1110, and a processor 1120. And memory 1130.
• System bus 1140 is used to connect network interface 1110, processor 1120, and memory 1130.
• the network device of this embodiment may exist in the primary base station or the secondary base station.
• the network interface 1110 is used to communicate with the Internet of Things terminal, the Internet of Things access gateway, the bearer network, the Internet of Things service gateway, and the application server.
• the processor 1120 can be a processor or a collective name for a plurality of processing elements.
• the processor 1120 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.
• CPU central processing unit
• ASIC application specific integrated circuit
• DSPs digital signal processors
• FPGAs Field Programmable Gate Arrays
• the memory 1130 may be a storage device or a collective name of a plurality of storage elements, and is used to store executable program codes or parameters, data, and the like required for operation of the base station. And the memory 1130 may include random access memory (RAM), and may also include non-volatile memory.
• RAM random access memory
• non-volatile memory such as disk storage, flash (Flash), etc.
• System bus 1140 can be an industry standard architecture ( Industry Standard
• the system bus 1140 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 13, but it does not mean that there is only one bus or one type of bus.
• these software components are loaded into memory 1130 and then accessed by processor 1120 and execute the following instructions: Determining whether the primary base station and the secondary base station are synchronized;
• the first length is 6 ms; the second length is 7 ms or 8 ms.
• a message is sent to the user equipment UE, indicating the determined length of the GAP in the message.
• the application can be used to cause the processor 1 120 to perform an instruction to determine whether the frame boundaries of the primary base station and the secondary base station are synchronized:
• the application may be used to cause the processor 112 to perform an instruction to determine whether the primary base station and the secondary base station are synchronized:
• the initial time of the SFN of the primary base station and the initial time of the SFN of the secondary base station determine an SFN deviation between the primary base station and the secondary base station;
• the SFN deviation is not 0 or greater than the first threshold, it is determined that the primary base station and the secondary base station are out of synchronization.
• the application may be used to cause the processor 112 to perform an instruction to determine whether the primary base station and the secondary base station are synchronized:
• the information includes an SFN deviation
• the application further includes instructions that can be used to cause the processor 1120 to perform the following process:
• the second length is 7 ms; when the calculation error of the SFN deviation is greater than the second threshold, the second length is 8 ms.
• the network device By using the network device provided by the embodiment of the present invention, it can be determined whether the primary base station and the secondary base station are in a synchronization scenario, and the synchronization and non-synchronization are performed when the primary base station and the secondary base station are synchronized and unsynchronized under the dual connectivity scenario.
• the scenario determines the appropriate measurement GAP length, effectively avoiding waste of scheduling resources caused by improper selection of the GAP length.
• the embodiment of the present invention provides a UE, which is used to implement the method for determining the measurement gap GAP length provided by the foregoing Embodiment 3.
• the UE includes: a network interface 1210, a processor 1220, and a memory. 1230.
• System bus 1240 is used to connect network interface 1210, processor 1220, and memory 1230.
• the network interface 1210 is for communicating with the Internet of Things terminal, the Internet of Things access gateway, the bearer network, the Internet of Things service gateway, and the application server.
• the processor 1220 can be a processor or a collective name for a plurality of processing elements.
• the processor 1220 may be a central processing unit (CPU), or may be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.
• CPU central processing unit
• ASIC application specific integrated circuit
• DSPs digital signal processors
• FPGAs Field Programmable Gate Arrays
• the memory 1230 may be a storage device or a collective name of a plurality of storage elements, and is used to store executable program codes or parameters, data, and the like required for the base station to operate.
• the memory 1430 may include random access memory (RAM), and may also include non-volatile memory. (non-volatile memory), such as disk storage, flash (Flash), etc.
• System bus 1240 can be an industry standard architecture ( Industry Standard
• the system bus 1240 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 12, but it does not mean that there is only one bus or one type of bus.
• the SFN of the primary base station and the SFN of the secondary base station determine an SFN deviation between the primary base station and the secondary base station;
• the receiving primary base station or the secondary base station sends a message, where the message includes an indication of the length of the GAP.
• the UE receives a system message sent by the secondary base station, and acquires the secondary base station.
• the application also includes instructions that can be used to cause the processor 1220 to perform the following process:
• the UE provided by the embodiment of the present invention determines whether the primary base station and the secondary base station are in a synchronization scenario by calculating the SFN deviation, and fully considers the synchronization and non-synchronization of the primary base station and the secondary base station in the dual connectivity scenario, based on synchronization or
• the asynchronous scene determines the appropriate measurement GAP length, effectively avoiding waste of scheduling resources caused by improper selection of the GAP length.
• the embodiment of the present invention provides a network device, which is used to implement the method for determining the measurement gap GAP length provided in the foregoing Embodiment 5.
• the network device includes: a network interface 1310, and a processor 1320. And memory 1330.
• System bus 1340 is used to connect network interface 1310, processor 1320, and memory 1330.
• the network device of this embodiment may exist in the primary base station or the secondary base station.
• the network interface 1310 is used to communicate with the Internet of Things terminal, the Internet of Things access gateway, the bearer network, the Internet of Things service gateway, and the application server.
• the processor 1320 may be a processor or a general term for a plurality of processing elements.
• the processor 1320 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.
• CPU central processing unit
• ASIC application specific integrated circuit
• DSPs digital signal processors
• FPGAs Field Programmable Gate Arrays
• the memory 1330 may be a storage device or a collective name of a plurality of storage elements, and is used to store executable program codes or parameters, data, and the like required for operation of the base station. And the memory 1330 may include random access memory (RAM), and may also include non-volatile memory.
• RAM random access memory
• non-volatile memory such as disk storage, flash (Flash), etc.
• System bus 1340 can be an industry standard architecture ( Industry Standard
• the system bus 1340 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 13, but it does not mean that there is only one bus or one type of bus.
• the initial time of the SFN of the primary base station and the initial time of the SFN of the secondary base station determine an SFN deviation between the primary base station and the secondary base station;
• the information includes the SFN deviation, and the UE is used to determine a GAP length according to the SFN deviation;
• the receiving UE sends a message, where the message includes an indication of the length of the GAP.
• the network device determines whether the primary base station and the secondary base station are in a synchronization scenario by calculating the SFN deviation, and is based on synchronization when the primary base station and the secondary base station are synchronized and unsynchronized in the dual connectivity scenario. Or the asynchronous scene determines the appropriate measurement GAP length, effectively avoiding waste of scheduling resources caused by improper selection of the GAP length.
• the embodiment of the present invention provides a UE, which is used to implement the method for determining the measurement gap GAP length provided in Embodiment 6 above.
• the UE includes: a network interface 1410, a processor 1420, and a memory. 1430.
• System bus 1440 is used to connect network interface 1410, processor 1420, and memory 1430.
• the network interface 1410 is for communicating with the Internet of Things terminal, the Internet of Things access gateway, the bearer network, the Internet of Things service gateway, and the application server.
• the processor 1420 can be a processor or a collective name for a plurality of processing elements.
• the processor 1420 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.
• CPU central processing unit
• ASIC application specific integrated circuit
• DSPs digital signal processors
• FPGAs Field Programmable Gate Arrays
• the memory 1430 may be a storage device or a collective name of a plurality of storage elements. And used to store executable program code or parameters, data, etc. required for base station operation. Memory
• RAM random access memory
• non-volatile memory such as disk storage, flash (Flash), etc.
• System Bus 1440 can be an industry standard architecture ( Industry Standard
• the system bus 1440 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 14, but it does not mean that there is only one bus or one type of bus.
• the length of the GAP is determined to be a second length; wherein the first length is 6 ms; and the second length is 7 ms or 8 ms.
• the application further includes instructions operable to cause the processor 1620 to perform the following processes:
• the second length is 7 ms; when the calculation error of the SFN deviation is greater than the second threshold, the second length is 8 ms.
• the UE provided by the embodiment of the present invention determines whether the primary base station and the secondary base station are in a synchronization scenario by calculating the SFN deviation, and fully considers the synchronization and non-synchronization of the primary base station and the secondary base station in the dual connectivity scenario, based on synchronization or
• the asynchronous scene determines the appropriate measurement GAP length, effectively avoiding waste of scheduling resources caused by improper selection of the GAP length.
• the operation and control part may be implemented by a logic hardware, which may be a logic integrated circuit manufactured by using an integrated circuit process, which is not limited in this embodiment.
• RAM random access memory
• ROM read-only memory
• EEPROM electrically programmable ROM
• EEPROM electrically erasable programmable ROM
• registers hard disk, removable disk, CD-ROM, or technical field Any other form of storage medium known.

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• 2014
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